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Password Strength Checker

Analyze password strength, get improvement suggestions, and estimate crack time. Your password never leaves your browser.

No uploads • Client-side only • Your data stays on your device

Enter Password to Check

Enter a password above to check its strength

Password Security Tips:

Use at least 12-16 characters for important accounts
Mix uppercase, lowercase, numbers, and symbols
Avoid personal information (names, birthdates, etc.)
Don't reuse passwords across different sites
Use a password manager to store unique passwords
Enable two-factor authentication when available

Your Privacy

All password analysis happens entirely in your browser. Your password is never sent to any server, logged, or stored. Check the network tab in your browser developer tools to verify - you'll see zero network requests when checking passwords.

Your Privacy Guaranteed

All processing happens directly in your browser using JavaScript. Your files, passwords, and data never leave your device and are never uploaded to our servers. We cannot see, store, or access anything you process with this tool.

No account required • No tracking • No data collection • Works offline after initial load

Password Strength Checker